Door lock



July 26, 1938. V J. H. SHAW 2,124,897

DOOR-LOCK Filed Sept. 26, 1936 2 Sheets-Sheet 1 July26,1938. J. H. SHAW2,124,897

DOOR LOCK Filed Sept. 26, 1936 2 Sheets-Sheet 2 Patented July 26, 1938 Iv g I UNITED STATES PAT'N'l? orrlca DOOR LOCK John H. Shaw, DaytonaBeach, Fla, :w

Sargent & Company, New Haven, Conn... a cor poration oi ConnecticutApplication September 26, 1936, Serial No. 162,638

""1 I" a (Cl, 70-451) This invention relates to door looks or latches,Fig. 3 is a perspective view .of the lock or latch and more particularlyto a door fastener which case detached from the door; may be providedwith a so-called latch bolt or Fig. 4 is a view of the lock mechanismwhen a dead bolt, and which may be mounted in the the cover of thecasing is removed to expose the 5 door in bored openings, thuseliminating a conconcealed structure;

siderable amount of labor necessary to form the Fig. 5 is a sectionalview on line 5-5 0! Fig. 4; usual mortised openings for a lock of themortise Fig. 6 is an enlarged view similar to Fig. 4 type. I haveillustrated a lock provided with a but showing the parts in a diflerentposition; latch bolt, which is to say, a bolt with a beveled Fig. 7 is adetail perspective view of the rolledge such that it will be retractedby engageback and associated parts; o ment with the usual strike platewhen the door Fig. 8 is an inner face view of the escutcheon is closed.It will be understood, however, that attached to theinner face of thedoor;

a dead bolt, or bolt which is not provided with Fig. 9 is an inner faceview 01 the outer escuta beveled edge, may be employed as well withcheon and lock cylinder attached thereto;

the present type of lock without material Fig. 10 is a perspective viewof the latch bolt; 15

change. Fig. 11 is a perspective view of the dog-con- Locks of thecharacter herein illustrated are trolling plunger; and

sometimes called tubular locks, as the bolt Fig. 12 is a'perspectiveview of the dogging mechanism is sometimes mounted in a cylindrilever.

80 cal or tubular casing which will fit an opening of As shown in Fig.1, the door it! has mounted circular cross-section which may be bored inthereon an inner escutcheon ii and an outer the edge of the door.Likewise, the bolt actuatescutcheon i 2, the latter carrying a lockcylinder ing mechanism, whether a knob or lock, may be l3 which may beoperated by the usual key I. placed in position through a circularopening The lock cylinder may be provided with lugs ii boredtransversely through the door and interand 58 having threadedperforations therein to 25 secting the opening for the lock case.receive the screws "and I8 passing through the One object o! the presentinvention is to pro- 'escutcheon ii to hold the two escutcheons withvide a lock of the character described which associated parts in placeupon the door. shall be of very simple structure, and at the The lockmechanism is contained within a same time will possess all theadvantages of the case, shown particularly in Fig. 3, of generally 30more complicated types of looks, so that the tubular form or circular incross-section. This lock may be very easily and readily installed,casing comprises a lower portion 19 having a and at the same timemanufactured at a relaface plate to thereon, and a cover 2!, which willtively low cost. consist of substantially one half of the casing,

Another object o! the invention is the prothe cover being detachablysecured to the casing 35 vision of a lock 0! the character describedwhich by means of the screw 22. The cover and the will be provided witha latch bolt, and a novel body of the casing are provided withprojecting mechanism for dogging the latch bolt against ends 23 and 24,whichare brought together to retraction by being forced with aninstrument P s ti ns Somewhat closer to each other than inserted betweenthe door and door casing. the extreme width of the casing, and which 40A still further object of the invention is to serve to carry some of theactuating mechanism .provide a lock of this character which may be ofthe lock, as will be explained hereinafter.

very economically installed in a door, andwhich Within the casing isprovided a bolt 25, shown may be provided with a casing of suchcharacter more especially in Fig. 10 as'a latch bolt with that it may beused in connection with either a a beveled face. This bolt is providedwith a 4 latch bolt or dead bolt. stem 26 and a hollow post 21' toreceive a spring To them and other ends the invention con- 28 whichsurroundsa post 28 secured to the sists in the novel features andcombinations of rear end 3b of the lock case. The stem 26 is parts to behereinafter described and claimed. designed to project slidably throughan opening 60 In the drawings: at the rear of. the case so as to liebetween the Fig. 1 is a sectional view through a door casmembers 23 and24, the stem at this point being ing upon which is mounted a lockembodying my recessed, as shown at iii, to receive abolt-actuatinvention; ing rollback 32.

Fig. 2 is a sectional view through the lock Toward its forward end thestem 26 is pro- 5 on line 22 of Fig. 1; vided with a shoulder 33 withwhich cooperates the laterally turned end 34 of a dogging lever 35pivoted at 36 upon a post within the case. Secured to this dogging leveris .one end of a spring 31, the other end of which reacts against thelock case, as shown in Fig. 6, to normally keep the forward end of thislever in upper position, that is, in position to engage behind theshoulder 33 and dog the bolt against retraction.

The dog-controlling plunger 38 is provided adjacent the flat side of thebolt head 25, this plunger projecting through an opening in the faceplate of the case, as shown in Fig. 5. The rear end of this plunger ishollow to receive a spring 39 mounted upon a post 48 within the case,which spring normally keeps the plunger in protracted position. Theplunger is provided with a shoulder 4| abutting the rear face of thebolt head 25, so that this plunger is retracted by the bolt head whenthe latter is retracted by engagement with the strike plate upon theclosing of the door. The plunger 38 is also provided with a cam surface42 which is designed to engage and disengage the laterally turned end 34of the dogging lever 35. When this dogging plunger is in its forward orprotracted position, as shown in Fig. 5, the cam surface 42 engages thepart 34 of the dogging lever 35, and holds this dog out of engagementwith the shoulder 33 of the bolt stem. When, however, the plunger is inretracted position, as shown in Fig. 6, the cam surface 42 has beenmoved rearwardly out of engagement with the member 34 and permits thespring 31 to move the dogging lever about its pivot post 36 until themember 34 lies behind the shoulder 33 and prevents the bolt being forcedrearwardly.

As has already been described, the bolt 25 is moved rearwardly by therollback 32 which lies between front and rear shoulders 44 and 45 on thebolt stem 26. This rollback member is nonrotatably mounted upon a hub46, which hub is rotatably mounted in and carried by the members 23 and24 projecting at the rear end of the'lock case. Also mounted upon thehub 46 is a second rollback or actuating member 41, which is designed toengage a cam surface 48 upon the dogging lever 35' to move this dogginglever out of engagement with the bo just prior to retraction of the boltby the rollback 32. It will be observed that the rollback 32 has acertain amount of clearance between the shoulders 44 and 45, and, asshown in Fig. 6, the rollback 41 will strike the cam. surface 48 priorto the engagement of the rollback 32 with the shoulder 45. The dogginglever 35 is also provided with a similar and oppositely disposed camsurface 48 to be engaged by the member 41 upon its return movement.

The hub 46 has a non-circular opening 50 therein through which extendsan operating spindle 5| of non-circular cross-section, the outer end ofwhich is mounted within the stem 52 of a thumb turn 53, which stem isrotatably mounted in the escutcheon H at the inside of the door. Thestem 52 is provided with a reduced portion 54, and is held in place inthe escutcheon by means of a forked or bifurcated slide 55 operated bythe button 56 disposed on the outside of the escutcheon plate andprovided with a stem 51 which passes through the plate and is engagedwith the slide 55. The arms of the slide 55 lie upon opposite sides ofthe stem 52 and engage the opposite sides of this stem within thereduced portion 54. This stem may be conveniently dogged againstrotation by means of a disk 58 having oppositely disposed slots 53formed therein, which slots are adapted to receive a laterally turnedlug 60 on the slide 55. Thus this slide serves a double purpose, that ofholding the stem in the escutcheon plate II, and that of serving as adogging slide to dog the thumb turn 53 against rotation. The slide maybe frictionally held in place by means of a spring 6| mounted betweenthe button 56 and a small cup-shaped member 62 surrounding the stem 51.

As shown in Fig. 2, the outer escutcheon I2 carries a key-operated lockmechanism shown herein as a pin tumbler lock having the usual cylinder65 and key barrel 66. The inner end of the key barrel is provided with awell or recess 61 covered by a perforated plate 68. This plate isprovided with an opening 68 of, keyhole shape, within the round portionof which extends the rounded end portion 68 of the square or noncircularspindle 5|. This end of the spindle is turned at right angles to thebody thereof so that it is retained by the plate against withdrawal.This end is of such a length, however. that, if not prevented from sodoing, the spindle would rotate freely relatively to the key barrel 66.To prevent such free rotation, however, and to provide for the rotationof the spindle by the key plug, a pin 18, shown in Fig. 9, is driveninto the key plug through the eccentric portion of the opening 68, theend of this pin standing in the recess 61 in position to engage thelaterally turned end of the spindle.

It will be apparent from this construction that the key barrel will havea considerable free rotative movement in one direction or the otherprior to the engagement of the turned end of the spindle by this pin.This free movement will be, in the construction shown, substantiallythree fourths of a complete revolution. This permits the spindle to havesubstantially three fourths of a revolution relatively to the keybarrel, so that the spindle may be turned by the thumb turn at theinside of the door to a sumcient extent to retract the latchbolt withoutany movement of the key plug. In other words, a person at the inside ofthe door may always retract the bolt even though the key plug isrestrained from movement.

The members 23 and 24 are provided with openings 16 and 11 to permit thepassing of the screws I1 and I8 therethrough, so that these screws mayextend to and be threaded into the lugs l5 and I6. If desired, anornamental face plate 16 may be secured to the plate 20 by being rivetedthereto.

It will be apparent that the mechanism illustrated and described is ofrelatively simple construction, and may be mounted in place in a doormerely by drilling an opening through the face edge of the door for thetubular lock case 2|, and a second opening transversely through the,door to receive the actuating mechanism carried by the escutcheons. Itwill also be apparent that the mechanism will have all the advantages inoperation possessed by the more complicated locks or latches. When thedoor is closed the latch bolt 25 will be cammed to retracted posit-ionby engagement with the usual strike plate upon the door, and will, owingto the engagement of the shoulder 4| on the plunger 38 with the rearside of the bolt head 25, also retract the plunger. When the boltreaches the opening in the strike plate, it will be protracted by itsspring 28, but the plunger will be I My -about its pivot by the spring31, and the laterally turned end 34 of this lever will engage behind theshoulder 33 on the bolt stem 23, this movement of the dogging leverbeing permitted by reason of the movement of the cam surface 42 on theplunger 38 rearwardly to a position where it no longer engages themember 33. It will be understood that when the plunger is in protractedposition, as it is when the door is open and as illustrated in Fig. 5,the cam suriace 32 engages the member 34 and holds this memberdownwardly against the action of the spring 31 so as to prevent thedogging of the latch bolt at this time.

It will be seen, therefore, that when the door is closed the parts arein the position shown in Fig. 6, and owing to the engagement of thedogging lever 35 with the shoulder 33, it is impossible to force thelatch bolt rearwardly by means of a member inserted between the door anddoor frame. The bolt may be retracted, how.- ever, by means of the thumbturn 53, which retates the spindle ii, the hub 50, and rollbacks 32' and41. As stated, the rollback 41 will engage the cam surface 48 upon thedogging lever 35, and throw the laterally turned end 34 of this memberdownwardly out of engagement with the shoulder 33, so that when therollback 32 engages the shoulder 45, it may freely retract the bolt. Thesame operation may, of course, be performed by means of the turning ofthe key plug 66 by means of a properly fitting key. If it is desired todog the bolt against retraction by the key from theoutside f the door,the button 56 is moved downwardly to engage the member iii in the slot59 of the disk SI, which will prevent the turning of the spindle 0wingto the connection of the spindle with the key barrel, the former can berotated to a sufiloient extent to retract the bolt without any movementof the key barrel.

While I have shown and described a preferred embodiment of my invention,it will be understoodthatitisnottobelimitedtoallofthe details shown, butis capable of modification and variation within the spirit of theinvention and within the scope of the appended claims.

What I claim is:

1. In a door lock, a case having a pair of spaced supporting members atthe rear end thereof, a bolt reoiprocably mounted in the case and havinga stem extending through the rear end of the case between said members,a dogging lever pivoted in the case and adapted to engage the bolt todog the same against retraction, a dog-controlling plunger projectingfrom the front of the case beside the bolt, a hub rotatably mountedbetween said members, and a pair of rollbacks carried by said hub, oneof said rollbacks being adapted to engage and retract the bolt stem andthe other engaging the dogging lever to move it to inoperative position.

2. In a door lock, a case having a pair of spaced supporting members atthe rear end thereof, a bolt reciprocably mounted in the case and havinga stem extending through the rear end of the case between said members,a dogging lever pivoted in the case and adapted to engage thebolt to dogthe same against retraction, a dog-controlling plunger projecting fromthe front of the case beside the bolt, a hub rotatably mounted betweensaid members, and a pair of rollbacks carried by said hub, one of saidrollbacks being adapted to engage and retract the bolt stem and theother engaging the dogging lever to move it to inoperative position, andsaid dogging lever rollback making engagement with said lever prior tothe engagement of said other rollback with the bolt stem.

JOHN H. SHAW.

